Anchor-bolt



F. HAMMERMANN.

I ANCHUR BOLT. APPplcATloN FILED MAR.16. 1920.

1,353.1 59., Patentedsept; 21, 1920.

@i g y .l 2 f4 zy@ 11 ,a ,ai .29 1 32 31 46' 25 l A, M l ,l d HJW l fynt'v UNITED STATES,

FRED HAMMERMANN, OF NEW YORK, N. Y.

.ANCHOR-BOLT.

'Specification of Letters Patent. v Patented Sep-lg.V 21,192() Application sied March 1e, 1920. serial No. 366,253.

To all whom t may concern.'

Be it known that I, FRED I-IAuMERMANN, a citizen of Germany, and a resident of New York, in the county and State of NewYork,

have invented certain new and useful Improvements in Anchor-Bolts, of which the following is a specification.

The object of this invention is to provide means for attaching, suspending or hanging miscellaneous articles, relative to a wall, in a firm, secure and effective manner, the wall being of brick, cement or plaster of ordinary masonry construction.

A further object is to provide such holding means in forms easily applied and which can be removed without damage to them.

These and other like objects are attained by the novel construction and combination of parts hereinafter fully described and shown in the accompanying drawings, forming a material part of this disclosure. and in which Figure 1 is a longitudinal sectional view showing an anchor bolt made in accordance with the invention and indicating its application.

Fig. 2 is a transverse sectional view taken on line 2-2 of Fig. 1.

'Fig 3 is a view, similar to Fig. 1, but showing the parts in an operatively engaged position.

Fig. 4 is an other view similar to Fig. 1 but showing a modied clamping device.

Fig. 5 is a perspective view showing theA sliding element or bar and anchor in detail.

Fig. 6 is a perspective view of the boltsleeve.

Referring to the drawings in detail, the numeral 10 designates the representation of a wall, comprised of brick, stone or composition of matter, relatively hard but into which may be drilled openings, either blind, as at 11, or through passages 12.

Loosely inserted into these openings, from the face of the wall it is desired to use, is a square bar 14 containing at its inner end a slot 15 having an oblique diagonal bottom 16 and presenting a pair of forks 17.

Pivoted on a pin 18, fixed in the forks, is a symmetrical rhomboidal plate anchor 20. one of its sides 21 being normally positioned parallel and adjacent to the bottom 16 of the slot, while the angular adjacent edge 22 is parallel tothe plane of the bar 14, as is also the opposite end edge .23, in which position, as shown in Figs. 1 and 4,'it is 'entered in the opening.

A sleeve or bushing 25, having a screw threaded exterior 26, containinga central square opening 27, adapted to slide freely over the bar 14, is then entered, means for driving being provided by the nick 28 formed at its outer end, while the inner end is beveled, as at 29, the sharp beveled edge being engageable with the slightly extending side 21 of the anchor upon retraction of the bar relative to the sleeve.

The outer end of the bar 14, as shown in Figs. 1, 3 and'5, has a screw-threaded stem 30, passing through a plate washer 31 and engages with the threads of a nut 32 having an extending head 33, here shown as a knobbut which may be formed as a hook or other preferred shape to engage the article it is desired to support.

In operation, the bar and anchor are entered in the hole provided for them, and which is of suitable diameter to receive the sleeve 25, the latter being tightly screwed into the hole, slightly beyond the surface of the wall.

The washer 31 is loosely slippedV over the threaded stem and the nut 32 tightened on the stem sufficient to withdraw or retract the bar, causing the point of the anchor, between the edges 21 and 22, to contact with the beveled edge 29 of the sleeve, forcing the anchor to turn upon its pivot and assume the position indicated in Figs. 1 and 5, the opposite points of the anchor forcing their way into the material of the wall and resisting a direct pull outwardly, thus supporting the element 33 in a firm and secure manner.

However, by removing the nut and washer, the sleeve 25 becomes accessible and may be taken out by the use of a suitable tool, permitting the bal` to be loosened and the anchor freed from the opening.

In the modification shown in Fig. 4, in place of the stem 30, the end of the ba-r 14 is drilled and screw-threaded, as at 35, to

receive a screw 36, its head 37 pressing a 'From the foregoing it will be seen that a simple, easily applied and effective device for the purposes set forth has been described, the uses for which are of frequent occurrence.

Having thus described my invention and set forth the manner of its construction and application, what I'V claim as new and desire to secure by Letters Patent, is

l. An anchor bolt comprising a bar slotted at its inner end diagonally, a rhomboidal anchor plate pivoted between the forks formed by the slot, a threaded sleeve in which said bar is slidable, means in said sleeve, by which it may be rotated, a beveled edge on the inner end of said sleeve contactable with one of the ends of said anchor plate and by which it may be rotated upon its pivot, and means for drawing said bar outwardly with respect to said sleeve.

2. An anchor bolt comprising a bar having at its inner end a central slot formed with a diagonal bottom, a rhomboidal anchor plate pivoted between the forks formed by the slot and adapted to rest against the bottom thereof, a sleeve receptive of said bar, said sleeve being of a diameter greater than the distance between the ends of the anchor plate measured on a line at right angles to the aXis of the bar when said plate is folded against the bottom of the slot, and means for drawing said bar outwardly with respect to said sleeve.v

In testimony whereof I have signed my name to this specification.

n FRED HAMMERMANN. 

